2021 Porsche 718 Boxster vs BMW Z4 M40i — Side by Side Comparison

How does the 2021 Porsche 718 Boxster compare to the BMW Z4 M40i? We put them side by side using EPA fuel economy data and NHTSA safety ratings.

Specifications Comparison

FeaturePorsche 718 BoxsterBMW Z4 M40i
Combined MPG2425
City MPG2122
Highway MPG2730
Body StyleSports CarSports Car
DriveRWDRWD
Fuel TypePremiumPremium
Safety RatingN/A / 5N/A / 5
Recalls00
Trims Available21

Fuel Economy

The BMW Z4 M40i is more fuel efficient by 1 MPG combined. Over a year, the BMW Z4 M40i saves approximately $300 in fuel costs.

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